Classic will be there with changes.
not sure I can post links since this char is not my trusted forum dweller. edit: seems I can for blizzard links
They will choose to go tbc.
Or stay in era era. But era will start to link all of them. I’d be guessing the op is among the “muh server pride!” purists.
Blizzard is probably thinking they will get lots of tbc bites and era era will take some population hits.